Loans and Allowance for Credit Losses on Loans - Schedule of Average Recorded Investment in Loans, Unpaid Principal Balance and Interest Income Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Financing Receivable, Impaired
Average Recorded Investment		$ 30,316
Interest Income Recognized		$ 1,625
Commercial
Financing Receivable, Impaired
Average Recorded Investment	$ 11,399
Interest Income Recognized	655
Commercial \| Commercial Real Estate
Financing Receivable, Impaired
Average Recorded Investment	8,661
Interest Income Recognized	336
Commercial \| Construction and land development
Financing Receivable, Impaired
Average Recorded Investment	1,218
Interest Income Recognized	54
Commercial \| Commercial and industrial
Financing Receivable, Impaired
Average Recorded Investment	868
Interest Income Recognized	236
Commercial \| Equipment finance
Financing Receivable, Impaired
Average Recorded Investment	652
Interest Income Recognized	29
Consumer
Financing Receivable, Impaired
Average Recorded Investment	18,917
Interest Income Recognized	970
Consumer \| One-to-four family
Financing Receivable, Impaired
Average Recorded Investment	14,796
Interest Income Recognized	687
Consumer \| HELOCs - originated
Financing Receivable, Impaired
Average Recorded Investment	1,698
Interest Income Recognized	99
Consumer \| HELOCs - purchased
Financing Receivable, Impaired
Average Recorded Investment	533
Interest Income Recognized	41
Consumer \| Construction and land development
Financing Receivable, Impaired
Average Recorded Investment	1,149
Interest Income Recognized	83
Consumer \| One-to-four family
Financing Receivable, Impaired
Average Recorded Investment	547
Interest Income Recognized	53
Consumer \| Consumer loans
Financing Receivable, Impaired
Average Recorded Investment	194
Interest Income Recognized	$ 7

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5258-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

+ Details

Name:	us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_CommercialandIndustrialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_EquipmentFinanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_OneToFourFamilyLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_HomeEquityLineofCreditOriginatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_HomeEquityLineofCreditAcquiredMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_ConstructionAndLandLotsLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_AutomobileLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=htbi_ConsumerLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: